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Rear elevation of Pioneer

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Rear elevation of Pioneer.png Sections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the ColumbiaSections of an English Coal MineThumbnailsDiagram comparing the Pioneer with the Columbia

Rear elevation of Pioneer and detail of valve shifter; valve face and valve. (Drawing by J. H. White.)